After 7 days of repeated delivery failures, give up on inbox (#5131)

- A successful delivery cancels it out
- An incoming delivery from account of the inbox cancels it out
This commit is contained in:
Eugen Rochko 2017-09-29 03:16:20 +02:00 committed by GitHub
parent 5b45c1646a
commit f4ca116ea8
5 changed files with 137 additions and 1 deletions

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@ -32,6 +32,7 @@ class ActivityPub::InboxesController < Api::BaseController
end
Pubsubhubbub::UnsubscribeWorker.perform_async(signed_request_account.id) if signed_request_account.subscribed?
DeliveryFailureTracker.track_inverse_success!(signed_request_account)
end
def process_payload

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@ -0,0 +1,56 @@
# frozen_string_literal: true
class DeliveryFailureTracker
FAILURE_DAYS_THRESHOLD = 7
def initialize(inbox_url)
@inbox_url = inbox_url
end
def track_failure!
Redis.current.sadd(exhausted_deliveries_key, today)
Redis.current.sadd('unavailable_inboxes', @inbox_url) if reached_failure_threshold?
end
def track_success!
Redis.current.del(exhausted_deliveries_key)
Redis.current.srem('unavailable_inboxes', @inbox_url)
end
def days
Redis.current.scard(exhausted_deliveries_key) || 0
end
class << self
def filter(arr)
arr.reject(&method(:unavailable?))
end
def unavailable?(url)
Redis.current.sismember('unavailable_inboxes', url)
end
def available?(url)
!unavailable?(url)
end
def track_inverse_success!(from_account)
new(from_account.inbox_url).track_success! if from_account.inbox_url.present?
new(from_account.shared_inbox_url).track_success! if from_account.shared_inbox_url.present?
end
end
private
def exhausted_deliveries_key
"exhausted_deliveries:#{@inbox_url}"
end
def today
Time.now.utc.strftime('%Y%m%d')
end
def reached_failure_threshold?
days >= FAILURE_DAYS_THRESHOLD
end
end

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@ -190,7 +190,8 @@ class Account < ApplicationRecord
end
def inboxes
reorder(nil).where(protocol: :activitypub).pluck("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)")
urls = reorder(nil).where(protocol: :activitypub).pluck("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)")
DeliveryFailureTracker.filter(urls)
end
def triadic_closures(account, limit: 5, offset: 0)

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@ -15,7 +15,10 @@ class ActivityPub::DeliveryWorker
perform_request
raise Mastodon::UnexpectedResponseError, @response unless response_successful?
failure_tracker.track_success!
rescue => e
failure_tracker.track_failure!
raise e.class, "Delivery failed for #{inbox_url}: #{e.message}", e.backtrace[0]
end
@ -34,4 +37,8 @@ class ActivityPub::DeliveryWorker
def response_successful?
@response.code > 199 && @response.code < 300
end
def failure_tracker
@failure_tracker ||= DeliveryFailureTracker.new(@inbox_url)
end
end

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@ -0,0 +1,71 @@
# frozen_string_literal: true
require 'rails_helper'
describe DeliveryFailureTracker do
subject { described_class.new('http://example.com/inbox') }
describe '#track_success!' do
before do
subject.track_failure!
subject.track_success!
end
it 'marks URL as available again' do
expect(described_class.available?('http://example.com/inbox')).to be true
end
it 'resets days to 0' do
expect(subject.days).to be_zero
end
end
describe '#track_failure!' do
it 'marks URL as unavailable after 7 days of being called' do
6.times { |i| Redis.current.sadd('exhausted_deliveries:http://example.com/inbox', i) }
subject.track_failure!
expect(subject.days).to eq 7
expect(described_class.unavailable?('http://example.com/inbox')).to be true
end
it 'repeated calls on the same day do not count' do
subject.track_failure!
subject.track_failure!
expect(subject.days).to eq 1
end
end
describe '.filter' do
before do
Redis.current.sadd('unavailable_inboxes', 'http://example.com/unavailable/inbox')
end
it 'removes URLs that are unavailable' do
result = described_class.filter(['http://example.com/good/inbox', 'http://example.com/unavailable/inbox'])
expect(result).to include('http://example.com/good/inbox')
expect(result).to_not include('http://example.com/unavailable/inbox')
end
end
describe '.track_inverse_success!' do
let(:from_account) { Fabricate(:account, inbox_url: 'http://example.com/inbox', shared_inbox_url: 'http://example.com/shared/inbox') }
before do
Redis.current.sadd('unavailable_inboxes', 'http://example.com/inbox')
Redis.current.sadd('unavailable_inboxes', 'http://example.com/shared/inbox')
described_class.track_inverse_success!(from_account)
end
it 'marks inbox URL as available again' do
expect(described_class.available?('http://example.com/inbox')).to be true
end
it 'marks shared inbox URL as available again' do
expect(described_class.available?('http://example.com/shared/inbox')).to be true
end
end
end